Overview of Open Data Protocol (ODP) ...

The Open Data Protocol (OData) is a protocol to request data through a query string.

The Open Data Protocol (OData) is a protocol to access data on the web. It provides a uniform way to query and manipulate data sets through CRUD operations.

Why we need an OData Service?

Advantages

1. OData is based on RESTful architecture, so we can retrieve data based on an URL query string.
   
   
2. OData supports HTTP, Atom Pub as well as JSON format.
   
   
3. It is very lightweight to use. Since it is lightweight, the performance is very good while interacting between client and service.
   
   
4. It supports for any type of data source. Even you can use your own custom class as a data source.
   
   
5. You can create your own custom methods and expose it.
   
   
6. It supports different HTTP methods:
   
   
   1. GET: Gets one or many entries.
   2. POST: Create a new entry.
   3. PUT: Update an existing entry.
   4. DELETE: Remove an entry.

Limitations

1. It is much less secure as it is purely URL based.